Soon after Abu Bakr's election, several Arab tribes launched revolts, threatening the unity and stability of the new community and state. These insurgencies and the caliphate's responses to them are collectively referred to as the Ridda Wars ("Wars of Apostasy").
The opposition movements came in two forms, one which challenged the political power of the caliphate, with the other being the acclamation of rival religious ideologies, headed by political leaders who claimed prophethood.
The Ridda Wars, were a series of military campaigns launched by the first caliph Abu Bakr against rebellious Arabian tribes. They began shortly after the death of the Islamic prophet Muhammad in 632 and concluded the next year, with all battles won by the Rashidun Caliphate. These wars secured the caliphate's control over Arabia and restored its nascent prestige.